In early 2011, after years of study, the Occupational Safety and Health Administration moved to reduce the permissible levels of silica dust wafted into the air by industrial processes like fracking, mining or cement manufacturing. The move came after years of public comment and hearings, and reflected emerging science about the dangers posed by even low levels of dust.

Leave a Reply

Sign up for updates!

[mc4wp-form]

“We have arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for awhile, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” - Carl Sagan